Concentricity adjusting device for three-jaw chuck

Abstract

The utility model relates to the technical field of adjusting devices, in particular to a three-jaw chuck concentricity adjusting device which comprises a chuck base and a limiting rail groove, the limiting rail groove is formed in the inner side of the upper end of the chuck base, a hydraulic rod is fixedly connected to the front end of the limiting rail groove formed in the chuck base, and the rear end of the hydraulic rod is fixedly connected with a rail plate. An electric telescopic rod is fixedly connected to the top end of the rail plate, a fixing block is fixedly connected to the top end of the electric telescopic rod, a locking assembly is fixedly connected to the inner side of the fixing block, a deviation detection assembly is fixedly connected to the outer side of the locking assembly, and a chuck device is fixedly connected to the top end of the chuck base; according to the clamping jaw adjusting device, the steps of repeated testing and adjusting in a traditional method are omitted, the influence of misoperation on the adjusting precision of the clamping jaw is reduced, and the adjusting efficiency and the adjusting precision are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to adjusting device technical field, concretely is a three jaw chuck concentricity adjusting device. BACKGROUND

[0002] Three jaw chuck is a common machine tool fixture, and is mainly used for clamping cylindrical or similar shaped workpieces, and its working principle is based on the synchronous movement of three clamping jaws to realize the automatic centering and clamping of workpieces, and the three jaw chuck is composed of a chuck body, movable clamping jaws and a clamping jaw driving mechanism, a small bevel gear is rotated through a wrench, and then a large bevel gear is driven to rotate, so that the three clamping jaws simultaneously approach or exit the center, thereby clamping workpieces of different diameters.

[0003] The three jaw chuck concentricity adjusting device is a device specially used for ensuring the concentricity of the three jaw chuck of a lathe and the main shaft of the lathe, and the design purpose of the device is to solve the problem of the deviation of the concentricity of the three jaw chuck caused by wear or other factors after long-term use.

[0004] In the process of processing the eccentricity problem caused by the wear of the clamping jaws of the chuck, the traditional method first involves accurately measuring the eccentricity deviation of the clamping jaws, and once the deviation value is determined, the clamping jaws are usually ground using the sanding process to correct their shape and size. This method requires the operator to repeatedly test and adjust during the sanding process to ensure that the concentricity of the clamping jaws is improved. Since multiple iterations and fine adjustments are required, this process not only takes time, but also requires high technical requirements, increasing the complexity and difficulty of the correction work. Therefore, a three jaw chuck concentricity adjusting device is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to provide a three jaw chuck concentricity adjusting device to solve the problem of repeatedly testing and adjusting during the sanding process, multiple iterations and fine adjustments, which not only takes time, but also requires high technical requirements, increasing the complexity and difficulty of the correction work.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a kind of three-jaw chuck concentricity adjusting device, including chuck base and limit rail slot, the inside of chuck base upper end is equipped with limit rail slot, the front end of limit rail slot that chuck base is equipped with is fixedly connected with hydraulic rod, the rear end of hydraulic rod is fixedly connected with rail plate, the top of rail plate is fixedly connected with electric telescopic rod, the top of electric telescopic rod is fixedly connected with fixed block, the inside of fixed block is fixedly connected with locking assembly, the outside of locking assembly is fixedly connected with deviation detection assembly, the top of chuck base is fixedly connected with chuck device, locking assembly includes fixed column, the outside of fixed column is fixedly connected with mounting seat, the outside of mounting seat is fixedly connected with inner hole vertical plate, the inside of inner hole vertical plate rear end is fixedly connected with electromagnet, the inside of inner hole vertical plate is slidably connected with double-column rod, the front end of inner hole vertical plate is fixedly connected with first spring, the rear end of double-column rod is fixedly connected with first toothed plate, the front end of first toothed plate is fixedly connected with magnet block, deviation detection assembly includes second toothed plate, one side of second toothed plate is fixedly connected with double-column guide rod, the inside of column cylinder is slidably connected with the outside of double-column guide rod, one side of double-column guide rod is fixedly connected with second spring, one side of double-column guide rod is fixedly connected with displacement sensor, the inside of second toothed plate is fixedly connected with solid column, the outside of solid column is fixedly connected with grinding wheel.

[0008] As the further optimization of the utility model, the limit rail slot penetrates the upper end of the chuck base, the limit rail slot has a cross shape in front view, and the rail plate has a cross shape in front view.

[0009] As the further optimization of the utility model, the inside of the fixed block close to the locking assembly is provided with a through hole, the outside of the fixed column is fixedly connected to the inside of the through hole of the fixed block, the fixed column has a cylindrical shape, and the rear end of the fixed column is flush with the rear end of the grinding wheel.

[0010] As the further optimization of the utility model, the number of the inner hole vertical plates and the number of the mounting seats are both three, the inside of the inner hole vertical plate close to the double-column rod is provided with a sliding hole, the number of the double-column rods is three groups, the number of the double-column rods in each group is two, and the double-column rods have a cylindrical shape.

[0011] As the further optimization of the utility model, the double-column rods have a two-segment cylindrical shape, one side of the front end of the double-column rod is fixedly connected to the front end of the first spring, the number of the first springs is the same as the number of the double-column rods, and the first springs are sleeved on the outside of the double-column rods.

[0012] As the further optimization of the utility model, the center of the electromagnet and the center of the magnet block are on the same horizontal line, the rear end of the first toothed plate is provided with a tooth, and one end of the first toothed plate is flush with one end of the second toothed plate.

[0013] As the further optimization of the utility model, wherein: the shape of the cylinder is hollow cylinder, the double column guide rod protrudes outside the cylinder, one end of the second spring is fixedly connected with the inside of the cylinder, one end of the displacement sensor is fixedly connected with the inside of the cylinder, one side of the cylinder is fixedly connected with the outside of the mounting base.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] In the utility model, the three-jaw chuck concentricity adjusting device is integrated with the deviation detection mechanism and the grinding mechanism, the accurate adjustment of the jaw concentricity is realized, the deviation of the jaw from the standard position can be automatically detected during the adjustment process, the jaw is ground in real time by the grinding mechanism to correct the shape and size, this method not only saves the steps of repeated testing and adjustment in the traditional method, but also reduces the influence of operation errors on the adjustment accuracy of the jaw, improves the adjustment efficiency and accuracy, and ensures the concentricity of the three-jaw chuck and the lathe spindle through the automatic adjustment process, thereby improving the quality of the machined workpiece and the machining efficiency of the lathe. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a fixed column structure schematic view of the utility model;

[0018] Figure 3 It is a grinding wheel structure schematic view of the utility model;

[0019] Figure 4 It is a second tooth plate structure schematic view of the utility model;

[0020] Figure 5 It is a cylinder structure schematic view of the utility model.

[0021] In the drawing: 1, chuck base; 2, limit rail groove; 3, hydraulic rod; 4, rail plate; 5, electric telescopic rod; 6, fixed block;

[0022] 7, locking assembly; 71, fixed column; 72, mounting base; 73, inner hole vertical plate; 74, electromagnet; 75, double column rod; 76, first spring; 77, first tooth plate; 78, magnet block;

[0023] 8, deviation detection assembly; 81, second tooth plate; 82, cylinder; 83, double column guide rod; 84, second spring; 85, displacement sensor; 86, solid column; 87, grinding wheel;

[0024] 9, chuck device. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0026] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and / or "include" as used in the specification indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] Please refer to Figures 1-5 The present application provides a technical solution:

[0028] A three-jaw chuck concentricity adjusting device, comprising a chuck base 1 and a limiting rail groove 2, the inner side of the upper end of the chuck base 1 is provided with a limiting rail groove 2, the front end of the limiting rail groove 2 provided on the chuck base 1 is fixedly connected with a hydraulic rod 3, the rear end of the hydraulic rod 3 is fixedly connected with a rail plate 4, the top end of the rail plate 4 is fixedly connected with an electric telescopic rod 5, the top end of the electric telescopic rod 5 is fixedly connected with a fixed block 6, the inner side of the fixed block 6 is fixedly connected with a locking assembly 7, the outer side of the locking assembly 7 is fixedly connected with a deviation detection assembly 8, the top end of the chuck base 1 is fixedly connected with a chuck device 9, the locking assembly 7 comprises a fixed column 71, the outer side of the fixed column 71 is fixedly connected with a mounting seat 72, the outer side of the mounting seat 72 is fixedly connected with an inner hole vertical plate 73, the inner side of the rear end of the inner hole vertical plate 73 is fixedly connected with an electromagnet 74, the inner side of the inner hole vertical plate 73 is slidably connected with a double-column rod 75, the front end of the inner hole vertical plate 73 is fixedly connected with a first spring 76, the rear end of the double-column rod 75 is fixedly connected with a first toothed plate 77, the front end of the first toothed plate 77 is fixedly connected with a magnet block 78, the deviation detection assembly 8 comprises a second toothed plate 81, one side of the second toothed plate 81 is fixedly connected with a double-column guide rod 83, the outer side of the double-column guide rod 83 is slidably connected to the inner side of a cylinder 82, one side of the double-column guide rod 83 is fixedly connected with a second spring 84, one side of the double-column guide rod 83 is fixedly connected with a displacement sensor 85, the inner side of the second toothed plate 81 is fixedly connected with a solid column 86, and the outer side of the solid column 86 is fixedly connected with a grinding wheel 87.

[0029] As a further implementation of the present scheme, the limiting rail groove 2 penetrates the upper end of the chuck base 1, the front view of the limiting rail groove 2 is cross-shaped, the front view of the rail plate 4 is cross-shaped, the rail plate 4 is slidingly connected to the inner side of the limiting rail groove 2, and the cross-shaped design helps to ensure the stability of the rail plate 4 inside the limiting rail groove 2, and facilitates the accurate control of the alignment degree by the operator during the adjustment process;

[0030] As a further implementation of the present scheme, the fixing block 6 is provided with a through hole near the inner side of the locking assembly 7, the fixing column 71 is fixedly connected to the inner side of the through hole of the fixing block 6, the fixing column 71 is in the shape of a cylinder, and the rear end of the fixing column 71 is flush with the rear end of the grinding wheel 87, thereby supporting the whole locking assembly 7 and facilitating the alignment of the rear end of the grinding wheel 87 with the rear end of the chuck jaw;

[0031] As a further implementation of the present scheme, the number of the inner hole vertical plates 73 and the number of the mounting seats 72 are both three, the inner hole vertical plates 73 are provided with sliding holes near the inner side of the double-column rods 75, the number of the double-column rods 75 is three groups, the number of the double-column rods 75 in each group is two, the shape of the double-column rods 75 is a cylinder, the shape of the double-column rods 75 is two sections of cylinders, the front end of the double-column rods 75 is fixedly connected to the front end of the first springs 76, the number of the first springs 76 is the same as the number of the double-column rods 75, the first springs 76 are sleeved on the outer side of the double-column rods 75, the center of the electromagnet 74 and the center of the magnet block 78 are on the same horizontal line, the rear end of the first toothed plate 77 is provided with teeth, and one end of the first toothed plate 77 is flush with one end of the second toothed plate 81, which helps to maintain the concentricity of the chuck jaw during the adjustment process, the design of the teeth provides a locking mechanism to ensure the stability of the chuck jaw after adjustment and prevent deviation during processing;

[0032] As a further implementation of the present scheme, the shape of the column cylinder 82 is a hollow cylinder, the double-column guide rods 83 protrude from the outer side of the column cylinder 82, one end of the second spring 84 is fixedly connected to the inner side of the column cylinder 82, one end of the displacement sensor 85 is fixedly connected to the inner side of the column cylinder 82, and one side of the column cylinder 82 is fixedly connected to the outer side of the mounting seat 72, thereby detecting the deviation between the three chuck jaws after the contact between the grinding wheel 87 and the chuck jaw through the rotation of the chuck device 9, and locking the position of the grinding wheel 87 through the locking assembly 7 to achieve the adjustment of the chuck device 9.

[0033] Work flow: when adjusting the chuck claw of the chuck device 9, open the front end cover of the chuck base 1, install the rail plate 4 on the inner side of the limiting rail groove 2, fix the hydraulic rod 3 with the rail plate 4, start the electric telescopic rod 5 to drive the fixed block 6 to move, align the axis of the fixed column 71 with the axis of the chuck device 9, start the hydraulic rod 3 to push the rail plate 4 to move towards the chuck device 9, when the rear end of the grinding wheel 87 is aligned with the chuck claw of the chuck device 9, adjust the chuck claw of the chuck device 9, make the chuck claw of the chuck device 9 contact with the outside of the grinding wheel 87, start the existing driving equipment of the chuck device 9 to make the chuck device 9 rotate, after the chuck claw of the chuck device 9 contacts with the grinding wheel 87, under the extrusion of the chuck device 9, the grinding wheel 87 drives the solid column 86 and the second tooth plate 81 to move towards the cylinder 82, the second tooth plate 81 drives the double-column guide rod 83 to move, the double-column guide rod 83 is slidably connected to the inner side of the cylinder 82, the cylinder 82 extrudes the second spring 84, the second spring 84 plays a role of resetting the double-column guide rod 83, the double-column guide rod 83 extrudes the displacement sensor 85, the displacement sensor 85 detects the moving distance of the double-column guide rod 83, so as to obtain the deviation value of the chuck claw of the chuck device 9, at this time, fix the second tooth plate 81 one by one, when the grinding wheel 87 contacts with the deviated chuck claw, power off the electromagnet 74, the electromagnet 74 loses the magnetic attraction with the magnet block 78, under the action of the elastic contraction of the first spring 76, the first spring 76 drives the double-column rod 75 and the first tooth plate 77 to move towards the second tooth plate 81, so that the first tooth plate 77 is engaged with the second tooth plate 81, at this time, the position of the double-column guide rod 83 is locked, through the driving equipment of the chuck device 9, the chuck claw of the chuck device 9 is rubbed with the grinding wheel 87, so that the three chuck claws are in the same concentricity, when adjusting the concentricity of the chuck device 9, the deviation detection mechanism and the grinding mechanism are combined together, after detection is completed, the chuck claw of the chuck device 9 can be adjusted, the debugging step is saved, and the operation error is reduced to affect the accuracy of the adjustment of the chuck claw of the chuck device 9.

[0034] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A concentricity adjusting device for a three-jaw chuck, comprising a chuck base (1) and a limiting rail slot (2), characterized in that: The inner side of the upper end of the chuck base (1) is provided with a limiting rail groove (2), the front end of the limiting rail groove (2) of the chuck base (1) is fixedly connected with a hydraulic rod (3), the rear end of the hydraulic rod (3) is fixedly connected with a rail plate (4), the top end of the rail plate (4) is fixedly connected with an electric telescopic rod (5), the top end of the electric telescopic rod (5) is fixedly connected with a fixed block (6), the inner side of the fixed block (6) is fixedly connected with a locking assembly (7), the outer side of the locking assembly (7) is fixedly connected with a deviation detection assembly (8), and the top end of the chuck base (1) is fixedly connected with a chuck device (9). The locking assembly (7) comprises a fixed column (71), the outer side of the fixed column (71) is fixedly connected with a mounting seat (72), the outer side of the mounting seat (72) is fixedly connected with an inner hole vertical plate (73), the inner side of the rear end of the inner hole vertical plate (73) is fixedly connected with an electromagnet (74), the inner side of the inner hole vertical plate (73) is slidably connected with a double-column rod (75), the front end of the inner hole vertical plate (73) is fixedly connected with a first spring (76), the rear end of the double-column rod (75) is fixedly connected with a first toothed plate (77), the front end of the first toothed plate (77) is fixedly connected with a magnet block (78), the deviation detection assembly (8) comprises a second toothed plate (81), one side of the second toothed plate (81) is fixedly connected with a double-column guide rod (83), the outer side of the double-column guide rod (83) is slidably connected to the inner side of a cylinder (82), one side of the double-column guide rod (83) is fixedly connected with a second spring (84), one side of the double-column guide rod (83) is fixedly connected with a displacement sensor (85), the inner side of the second toothed plate (81) is fixedly connected with a solid column (86), and the outer side of the solid column (86) is fixedly connected with a grinding wheel (87).

2. The concentricity adjustment device of a three-jaw chuck according to claim 1, wherein: The limiting rail groove (2) penetrates the upper end of the chuck base (1), the front view shape of the limiting rail groove (2) is cross-shaped, and the front view shape of the rail plate (4) is cross-shaped.

3. The concentricity adjustment device of a three-jaw chuck according to claim 1, wherein: The inner side of the fixed block (6) close to the locking assembly (7) is provided with a through hole, the outer side of the fixed column (71) is fixedly connected to the inner side of the through hole of the fixed block (6), the shape of the fixed column (71) is a cylinder, and the rear end of the fixed column (71) is flush with the rear end of the grinding wheel (87).

4. The concentricity adjustment device of a three-jaw chuck according to claim 1, wherein: The number of the inner hole vertical plate (73) and the number of the mounting seat (72) are three respectively, the inner side of the inner hole vertical plate (73) close to the double-column rod (75) is provided with a sliding hole, the number of the double-column rod (75) is three groups, the number of each group of the double-column rod (75) is two, and the shape of the double-column rod (75) is a cylinder.

5. The concentricity adjustment device of a three-jaw chuck according to claim 1, wherein: The shape of the double-column rod (75) is two sections of cylinders, one side of the front end of the double-column rod (75) is fixedly connected with the front end of the first spring (76), the number of the first spring (76) is the same as the number of the double-column rod (75), and the first spring (76) is sleeved on the outer side of the double-column rod (75).

6. The concentricity adjustment device of a three-jaw chuck according to claim 1, wherein: The center of the electromagnet (74) is in the same horizontal line with the center of the magnet block (78), the rear end of the first toothed plate (77) is provided with a tooth, and one end of the first toothed plate (77) is flush with one end of the second toothed plate (81).

7. The concentricity adjustment device of a three-jaw chuck according to claim 1, wherein: The shape of the column (82) is a hollow cylinder, the double-column guide rod (83) protrudes outside the column (82), one end of the second spring (84) is fixedly connected with the inside of the column (82), one end of the displacement sensor (85) is fixedly connected with the inside of the column (82), and one side of the column (82) is fixedly connected with the outside of the mounting seat (72).

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